Article
Chemistry, Multidisciplinary
Xinghui Liang, Hun Kim, Hun-Gi Jung, Yang-Kook Sun
Summary: A Li-substituted, tunnel/spinel heterostructured cathode has been successfully synthesized in this study, with Li dopant acting as a pillar to inhibit unfavorable multiphase transformation and provide 3D Na+ diffusion channels for improved sodium storage performance and redox reaction kinetics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hsiu-Fen Lin, Si-Ting Cheng, De-Zhen Chen, Nian-Ying Wu, Zong-Xiao Jiang, Chun-Ting Chang
Summary: In this study, a new nanolayer coating material, LiCoMnO4, was proposed to modify the surface of lithium cathode oxide. The designed cathode with nanolayer spinel coating exhibited excellent electrochemical performance, including reversible capacity, rate capability, and cycling ability.
Article
Chemistry, Physical
Natalia Voronina, Hee Jae Kim, Minyoung Shin, Seung-Taek Myung
Summary: The study found that Ti substitution can improve the performance of sodium-ion battery cathode materials, including increasing initial capacity and capacity retention, as well as reducing volume changes. By pairing with a hard-carbon anode, Na[(Mn0.4Fe0.3Ni0.3)(0.9)Ti-0.1]O-2 achieved excellent cyclability and capacity retention for 300 cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Saban Patat, Ayse Sahin, Yusuf Tas, Ferhat Sanli, Yakup Yilmaz, Tayfur Ozturk
Summary: A novel O3-NaMn0.42Fe0.42Ni0.17O2 cathode material for sodium-ion batteries was successfully synthesized using a co-precipitation method followed by solid-state reaction. The substitution of Ni2+, Cu2+, and Ca2+ for Fe3+ and Mn4+ improved the structural stability and electrochemical performance of the O3-NaMn0.33Fe0.33Ni0.21Cu0.08Ca0.04O2 cathode material. When combined with a hard carbon anode, the full cell exhibited an energy density of 220 Wh kg(-1) and 100% capacity retention after 56 charge/discharge cycles.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Chemistry, Physical
Xin Cao, Yu Qiao, Min Jia, Ping He, Haoshen Zhou
Summary: This study reviews the potential application of Li-rich and Li-excess oxides as cathode materials for next-generation Li-ion batteries, discusses the challenges in using Li-excess oxides, and explores mechanisms to address these issues. Future research directions in the field are also proposed based on advanced characterizations and theory calculations.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Ngoc Hung Vu, Hai-Linh Thi Dang, Hong-Ha Thi Vu, Nang Xuan Ho, Viet-Cuong Tran, Dang Thanh Tran, Van-Duong Dao
Summary: A layered-spinel structure of Li3MnTiO(4)+z (0.8Li2Mn0.5Ti0.5O3.0.2LiMnTiO4) was successfully synthesized as a working electrode for Li-ion batteries. The electrode exhibited excellent electrochemical performance, with high capacity and a high Li+ diffusion coefficient even after cycling.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Yulei Sui, Yueying Hao, Xiaoping Zhang, Jiangpeng Li, Gongyu Wen, Shengkui Zhong, Ziwei Zhang, Ling Wu
Summary: This study successfully synthesized V-substituted Na0.67Fe0.5Mn0.5O2 cathode material with improved electrochemical performance, and investigated the effects of V-substitution on its chemical composition, crystal structure and morphology, as well as the modification mechanisms on the enhanced electrochemical properties. The results showed that introducing V ions into the lattice of Na0.67Fe0.5Mn0.5O2 crystals significantly improved its rate capability and cycle stability, mainly due to the enhanced Na+ diffusion rate and structural reversibility.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
A. Shahul Hameed, Mirai Ohara, Kei Kubota, Shinichi Komaba
Summary: A phosphite-based layered polyanionic material was explored as a positive electrode for Na-ion batteries with high energy density and long cycle life. The material exhibited high discharge capacity in Na half-cells, and capacity fading was overcome through ball-milling with carbon. The layered material facilitated the migration of large Na+ ions, resulting in superior rate performance and long-term cycling stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Analytical
Ngoc Hung Vu, Hong Ha Thi Vu, Ho Xuan Nang, Phan Thi Dien, Le Thi Hoa, Won Bin Im, Vu Thu Ha, Luu Anh Tuyen, Nguyen Quang Hung, Van-Duong Dao
Summary: The conflicting roles of F doping on the electrochemical performance of layered-spinel Li1.2Mn0.75Ni0.25O2-zFz (z = 0, 0.05, 0.1) cathode materials are studied. F doping content affects the phase ratio and leads to different effects on the cathode. When z = 0.05, it improves cycle stability but reduces cathode capacity. However, increasing F doping to z = 0.1 results in the best cycle stability with high capacity retention.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Yuanliang Yuan, Xin Wang, Jicheng Jiang, Can Guo, Donghuang Wang, Aijun Zhou
Summary: The introduction of lithium (Li) doping into Na1.0Cu0.22Fe0.30Mn0.48O2 cathode material can improve its capacity and stability. The doped Li element can regulate the redox reactivities of adjacent Fe and Mn elements, preventing structure collapse and enhancing the Fe redox reactivity. The Na1Li0.075Cu0.22Fe0.30Mn0.48O2 cathode exhibits a capacity retention of 90.2% with a capacity of 114.2 mAh g(-1) after 300 cycles at 1 C.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Engineering, Environmental
Zhengbo Liu, Chaojin Zhou, Jun Liu, Lichun Yang, Jiangwen Liu, Min Zhu
Summary: Element doping is a common method for improving the performance of cathode materials in batteries. This study successfully transformed an O3-type cathode into a P2-type cathode using a simple Li/F co-doping route. The modified P2-type cathode showed higher Na content, solid solution reaction in a high-voltage range, and a stronger TM-F bond. This research provides a new idea and reference for synthesizing high-performance P2-type layered oxide cathode materials for sodium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jae Yoon Sung, Nitheesha Shaji, Taehyung Kim, Feng Jiang, Murugan Nanthagopal, Soon Phil Jung, Chang Woo Lee
Summary: Na2/3Cu2/9Fe1/9Mn2/3O2, an air-stable P2-type layered cathode, is synthesized using solution combustion method and its electrochemical performance is investigated using triethyl phosphate (TEP), a well-known fire-retardant solvent. The cathode exhibits air and moisture stability and the electrolyte is nonflammable. Compared to a carbonate-based electrolyte, the TEP cell shows higher capacity retention (76.28%) after 200 cycles at 2 C rate in a wide voltage range (1.5-4.6 V vs. Na/Na+). Morphological and spectroscopic studies of the cathode-electrolyte interphase (CEI) layer reveal the reason for the superior electrochemical properties of the TEP cell.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Lei Tan, Qifeng Wu, Zengsheng Liu, Qiheng Chen, Hongling Yi, Zixiang Zhao, Liubin Song, Shengkui Zhong, Xianwen Wu, Lingjun Li
Summary: In this study, a Ti-substituted mixed metal oxide cathode material with suppressed phase transition and enhanced storage stability was prepared.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Hao-Hsuan Hsia, Irish Valerie B. Maggay, Rasu Muruganantham, Wei-Ren Liu
Summary: ZnIn2S4 (B-ZIS) and ZnIn2S4/C (S-ZIS) composites anode were synthesized using hydrothermal method and ball-milling process. The addition of carbon black improved the cycle stability and reversible capacity. The high reversibility nature of B-ZIS leads to the superior cycling and excellent rate capability of S-ZIS, making ZnIn2S4 a potential anode material for sodium ion batteries.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Applied
Yanchen Liu, Chenchen Wang, Meng Ren, Hengyi Fang, Zhuoliang Jiang, Fujun Li
Summary: Introducing Ti4+ to substitute partial Mn4+ in layered manganese-based oxide cathodes can enhance the structural stability, capacity retention, and cycling performance, providing insights for designing high-performance cathode materials for sodium-ion batteries.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Yuan Yue, Yang Ha, Raynald Giovine, Raphaele Clement, Wanli Yang, Wei Tong
Summary: This study investigates the high-voltage reactivity and long-term cycling stability of a fluorinated Li-excess cation-disordered rocksalt (DRX) cathode. The results demonstrate the significant influence of surface reactions and electrolyte decomposition on the cycling performance of the cathode.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jian Hui, Jin Yu, Yuxi Luo, Wenhui Hu, Yuzi Liu, Qingyun Hu, Kailin Wang, Tianyi Li, Xinwei Zhou, Jier Huang, Xiaoyi Zhang, Yang Ren, Hong Wang
Summary: This study reports on the effect of synchrotron X-rays on copper thin films under ambient conditions. In situ measurements and scanning electron microscopy observations reveal that synchrotron X-rays can induce the growth of copper hydroxide nitrate and the growth process can be controlled by adjusting the exposure time.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Linghong Zhang, Yuzi Liu, Fangmin Guo, Yang Ren, Wenquan Lu
Summary: This study investigates the microstructure transformation of SiO upon annealing treatment and its impact on the electrochemical performance. Optimal microstructure of SiO is achieved through annealing treatment at 800 degrees C or less, leading to reduced interphase (SiOx) without significant Si domain growth.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Lingzhe Fang, Wei Xu, Xingyi Lyu, Yuzi Liu, Benjamin Reinhart, Hoai Nguyen, Tao Li
Summary: The FeCo/sulfurized polyacrylonitrile (SPAN) cathode material is synthesized for lithium-sulfur (Li-S) batteries, which shows the existence of Fe-S/Fe and Co-S bonds that benefit the adsorptive and catalytic activities toward lithium polysulfides (LiPSs). The electrolyte concentration is found to play a crucial role in inhibiting the shuttle of LiPSs, with higher concentrations resulting in more contact ion pairs and fewer free solvent molecules. Batteries assembled with high concentration electrolytes exhibit higher specific capacity retention. This work enriches the route to prepare Li-S batteries through rational design of cathode materials and electrolytes.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Matthew J. Crafton, Tzu-Yang Huang, Yuan Yue, Raynald Giovine, Vincent C. Wu, Chaochao Dun, Jeffrey J. Urban, Raphaele J. Clement, Wei Tong, Bryan D. McCloskey
Summary: In this study, the extent of chemical reactions of a series of Mn2+/4+-based lithum-excess, cation-disordered rocksalt (DRX) oxyfluorides were quantified using a combination of differential electrochemical mass spectrometry (DEMS) and titration mass spectrometry. The results show that increasing the fluorine content can decrease redox reactions and suppress the generation of high-voltage O2 from the DRX surface.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Xingyi Lyu, Max Meirow, Xun Wu, Xinwei Zhou, Yuzi Liu, Wenyu Huang, Tao Li, Byeongdu Lee
Summary: The mesoporous silica shell coating the hydrogenolysis nano-catalyst alters the molecular weight distributions of cleaved polymer chains compared to catalysts without a shell. The shell reduces low-valued gaseous products and increases the median molecular weight of the product, enhancing the value of the products for polymer upcycling. The spatial distribution of polystyrene chains in the nanochannels reveals a non-uniform distribution for longer chains.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ji Qian, Yang Ha, Krishna Prasad Koirala, Di Huang, Zhi Huang, Vincent S. S. Battaglia, Chongmin Wang, Wanli Yang, Wei Tong
Summary: This study reports the synthesis of a highly fluorinated Li-excess cation-disordered rock salts (DRX) cathode, Li1.2Mn0.6Ti0.2O1.8F0.2, based on cost-effective and earth-abundant transition metals via a solid-state reaction. The fluorinated DRX cathode using an ammonium fluoride precursor exhibits uniform particle size, delivering a specific discharge capacity of 233 mAh g(-1) and specific energy of 754 Wh kg(-1), with 206 mAh g(-1) retained after 200 cycles. The study demonstrates the potential to develop next-generation cost-effective DRX cathodes with enhanced capacity retention for high-energy Li-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Kang Yao, Na Li, Ning Li, Eric Sivonxay, Yaping Du, Kristin A. Persson, Dong Su, Wei Tong
Summary: Si-Sn thin film electrode shows excellent cycling stability, outperforming pure Si or Sn electrodes. Through first-principles calculations and in situ transmission electron microscopy studies, it is found that the Si-Sn electrode has reduced volume expansion, increased conductivity, and dynamic rearrangement upon lithiation. This work provides an important advance in understanding the lithiation mechanism of Si-based anodes for next-generation lithium-ion batteries.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bomin Li, Fan Xia, Yiqi Liu, Haiyan Tan, Siyuan Gao, Jacob Kaelin, Yuzi Liu, Ke Lu, Tobin J. Marks, Yingwen Cheng
Summary: Electrocatalytic nitrate to ammonia conversion is crucial for sustainable energy and environment. The newly discovered active motifs based on the Chevrel phase Co2Mo6S8 exhibit high turnover frequency and ammonia selectivity. The catalyst achieves almost 100% ammonia conversion efficiency and high yield.
Article
Nanoscience & Nanotechnology
Xinwei Zhou, Liliana Stan, Dewen Hou, Yang Jin, Hui Xiong, Likun Zhu, Yuzi Liu
Summary: Al2O3 coating improves the mechanical stability of high-capacity anode materials by reducing crack formation during volume expansion. However, it is unable to prevent pulverization at the later stage of cycling due to excessive volume expansion.
Article
Nanoscience & Nanotechnology
Yue Li, Xiaobing Hu, Arash Fereidouni, Rabindra Basnet, Krishna Pandey, Jianguo Wen, Yuzi Liu, Hong Zheng, Hugh O. H. Churchill, Jin Hu, Amanda K. . Petford-Long, Charudatta Phatak
Summary: This study investigates the impact of oxidation on magnetic domains in a nanoscale Fe3GeTe2 flake. The researchers observe an increase in the density of skyrmions with partial oxidation and a loss of the magnetic domain structure with complete oxidation. The interfacial interaction between surface antiferromagnetic oxides and the bulk ferromagnetic Fe3GeTe2, as well as the effect of interfacial roughness, are hypothesized to contribute to the increase in Neel skyrmion creation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jiyu Cai, Xinwei Zhou, Tianyi Li, Hoai T. Nguyen, Gabriel M. Veith, Yan Qin, Wenquan Lu, Stephen E. Trask, Marco-Tulio Fonseca Rodrigues, Yuzi Liu, Wenqian Xu, Maxwell C. Schulze, Anthony K. Burrell, Zonghai Chen
Summary: This study identifies the issues with silicon-based lithium-ion batteries during calendar aging and proposes strategies to improve battery life by suppressing parasitic reactions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Jehee Park, Kyojin Ku, Jihyeon Gim, Seoung-bum Son, Heonjae Jeong, Lei Cheng, Hakim Iddir, Dewen Hou, Hui Xiong, Yuzi Liu, Eungje Lee, Christopher Johnson
Summary: Developing stable cathode materials is crucial for practical development of Na-ion batteries. Fe-substituted O3-type Na(Ni1/2Mn1/2)(1-x)FexO2 materials are promising for high-performance and low-cost cathodes. This study investigates the role of Fe substitution in improving air-storage stability, attributing it to the formation of a surface protective layer and decreased thermodynamic driving force for sodium extraction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Na Jin, Yonglei Sun, Wenwu Shi, Ping Wang, Yasutaka Nagaoka, Tong Cai, Rongzhen Wu, Lacie Dube, Hawi N. Nyiera, Yuzi Liu, Tomoyasu Mani, Xinzhong Wang, Jing Zhao, Ou Chen
Summary: The decoration of Au satellite-type domains on the surface of CdS/ZnS quantum dots effectively overcomes the energy barrier and improves the photocatalytic reaction rate by over 400 fold. Transient absorption spectroscopy studies showed that charges can be efficiently extracted and transferred to surrounding molecular substrates in a subpicosecond time scale in such hybrid nanocrystals.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
H. Christopher Fry, Ralu Divan, Yuzi Liu
Summary: The design of peptide amphiphiles that assemble into 1D nanostructures and yield metalloporphyrin binding sites is presented. By exploring different peptide assemblies, it is found that the sequence with a length of 2 has the highest binding affinity. These nanoscale assemblies have ordered arrays of heme and show potential utility in sensing and enzymatic materials.